GLOCK Universal Mount Red Dot Optic Mounting Platform (GUM) provides a secure, no permanent modification solution for mounting a wide range of red dot sights on Glock pistols. It uses a dovetail mount with set screws to deliver stable, repeatable optic alignment and easy tool adjustments when needed. Key benefits No permanent modifications required: preserves the original condition of the firearm while enabling rapid optic installation. Secure, repeatable mounting: dovetail design plus set screws hold the optic firmly in place for reliable performance. Wide compatibility: supports red dot sights across brands and models listed below. Complete package: includes the mount and a hardware set with screws for immediate installation. Compatibility Burris Fast Fire II and Burris Fast Fire III Leupold Delta Point reflex sights Docters Sight II PLUS EoTech MRDS Trijicon RMR Vortex Venom gs20078 gs20117 mini red dot sight Package contents One GUM GLOCK Universal Mount One package of mounting hardware and set screws Product features Dovetail Mount with Set Screws for secure attachment and stable optics performance Use scenarios Range or competition setup: quickly swap between optics such as Burris Fast Fire II/III, Leupold Delta Point, or Trijicon RMR to match different targets or courses without permanent alterations. Training or multiple Glock configurations: prepare a single pistol for several optics setups used across drills or practice sessions, enabling fast transitions. Travel, backup, or duty readiness: carry a Glock with an interchangeable optic system to accommodate different environments or missions by switching to an appropriate sight without gunsmithing.